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Mesoscale modulation of air-sea CO2 flux in Drake Passage
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  • Personal Author:
  • Description:
    We investigate the role of mesoscale eddies in modulating air-sea CO2 flux and associated biogeochemical fields in Drake Passage using in situ observations and an eddy-resolving numerical model. Both observations and model show a negative correlation between temperature and partial pressure of CO2 (pCO(2)) anomalies at the sea surface in austral summer, indicating that warm/cold anticyclonic/cyclonic eddies take up more/less CO2. In austral winter, in contrast, relationships are reversed: warm/cold anticyclonic/cyclonic eddies are characterized by a positive/negative pCO(2) anomaly and more/less CO2 outgassing. It is argued that DIC-driven effects on pCO(2) are greater than temperature effects in austral summer, leading to a negative correlation. In austral winter, however, the reverse is true. An eddy-centric analysis of the model solution reveals that nitrate and iron respond differently to the same vertical mixing: vertical mixing has a greater impact on iron because its normalized vertical gradient at the base of the surface mixed layer is an order of magnitude greater than that of nitrate.

  • DOI:
    http://dx.doi.org/10.1002/2016jc011714
  • Document Type:
    Journal Article
  • Funding:
    NA12OAR4310058
  • Collection(s):
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
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      Ortega, I.; Coburn, S.; Berg, L. K.; Lantz, K.; Michalsky, J.; Ferrare, R. A.; Hair, J.; Hostetler, C. A.; Volkamer, R.;
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      2016
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      Atmospheric Measurement Techniques, 9(8), 3893-3910.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      The multiannual global mean of aerosol optical depth at 550 nm (AOD(550))over land is similar to 0.19, and that over oceans is similar to 0.13. About 45% of the Earth surface shows AOD550 smaller than 0.1. There is a need for measurement techniques t...
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      LaFranchi, B. W.; McFarlane, K. J.; Miller, J. B.; Lehman, S. J.; Phillips, C. L.; Andrews, A. E.; Tans, P. P.; Chen, H.; Liu, Z.; Turnbull, J. C.; Xu, X.; Guilderson, T. P.;
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      2016
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      Journal of Geophysical Research-Biogeosciences, 121(8), 2275-2295.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
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      Radiocarbon in CO2 ((CO2)-C-14) measurements can aid in discriminating between fast (< 1 year) and slower (> 5-10 years) cycling of C between the atmosphere and the terrestrial biosphere due to the 14C disequilibrium between atmospheric and terrestri...
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      Atmospheric Measurement Techniques, 9(9), 4295-4310.
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      2016
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      Global Change Biology, 22(10), 3427-3443.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
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      Understanding tropical rainforest carbon exchange and its response to heat and drought is critical for quantifying the effects of climate change on tropical ecosystems, including global climate-carbon feedbacks. Of particular importance for the globa...
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    6. Separation of biospheric and fossil fuel fluxes of CO2 by atmospheric inversion of CO2 and (CO2)-C-14 measurements: Observation System Simulations
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      Published Date:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(9), 5665-5683.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      National annual total CO2 emissions from combustion of fossil fuels are likely known to within 5-10aEuro-% for most developed countries. However, uncertainties are inevitably larger (by unknown amounts) for emission estimates at regional and monthly ...
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    7. No significant increase in long-term CH4 emissions on North Slope of Alaska despite significant increase in air temperature
      Personal Author:
      Sweeney, C.; Dlugokencky, E.; Miller, C. E.; Wofsy, S.; Karion, A.; Dinardo, S.; Chang, R. Y. W.; Miller, J. B.; Bruhwiler, L.; Crotwell, A. M.; Newberger, T.; McKain, K.; Stone, R. S.; Wolter, S. E.; Lang, P. E.; Tans, P.;
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      2016
      Source:
      Geophysical Research Letters, 43(12), 6604-6611.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Continuous measurements of atmospheric methane (CH4) mole fractions measured by NOAA's Global Greenhouse Gas Reference Network in Barrow, AK (BRW), show strong enhancements above background values when winds come from the land sector from July to Dec...
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    8. Rising atmospheric methane: 2007-2014 growth and isotopic shift
      Personal Author:
      Nisbet, E. G.; Dlugokencky, E. J.; Manning, M. R.; Lowry, D.; Fisher, R. E.; France, J. L.; Michel, S. E.; Miller, J. B.; White, J. W. C.; Vaughn, B.; Bousquet, P.; Pyle, J. A.; Warwick, N. J.; Cain, M.; Brownlow, R.; Zazzeri, G.; Lanoiselle, M.; Manning, A. C.; Gloor, E.; Worthy, D. E. J.; Brunke, E. G.; Labuschagne, C.; Wolff, E. W.; Ganesan, A. L.;
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      2016
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      Global Biogeochemical Cycles, 30(9), 1356-1370.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
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      From 2007 to 2013, the globally averaged mole fraction of methane in the atmosphere increased by 5.7 +/- 1.2 ppb yr(-1). Simultaneously, delta C-13(CH4) (a measure of the C-13/C-12 isotope ratio in methane) has shifted to significantly more negative ...
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    9. Controlled weather balloon ascents and descents for atmospheric research and climate monitoring
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      Atmospheric Measurement Techniques, 9(3), 929-938.
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      2016
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      Elementa-Science of the Anthropocene, 4: 000132.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Instrumented aircraft measuring air composition in the Uinta Basin, Utah, during February 2012 and January-February 2013 documented dramatically different atmospheric ozone (O-3) mole fractions. In 2012 O-3 remained near levels of similar to 40 ppb i...
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      2016
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      Atmospheric Measurement Techniques, 9(7), 3355-3389.
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      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Profiles of CFC-11 (CCl3F) and CFC-12 (CCl2F2) of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) aboard the European satellite Envisat have been retrieved from versions MIPAS/4.61 to MI-PAS/4.62 and MIPAS/5.02 to MIPAS/5.06 lev...
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    12. Surrogate gas prediction model as a proxy for Delta C-14-based measurements of fossil fuel CO2
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      Coakley, K. J.; Miller, J. B.; Montzka, S. A.; Sweeney, C.; Miller, B.;
      Published Date:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(12), 7489-7505.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      The measured C-14:C-12 isotopic ratio of atmospheric CO2 (and its associated derived Delta C-14 value) is an ideal tracer for determination of the fossil fuel derived CO2 enhancement contributing to any atmospheric CO2 measurement (C-ff). Given enoug...
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      Personal Author:
      Vollmer, M. K.; Muhle, J.; Trudinger, C. M.; Rigby, M.; Montzka, S. A.; Harth, C. M.; Miller, B. R.; Henne, S.; Krummel, P. B.; Hall, B. D.; Young, D.; Kim, J.; Arduini, J.; Wenger, A.; Yao, B.; Reimann, S.; O'Doherty, S.; Maione, M.; Etheridge, D. M.; Li, S. L.; Verdonik, D. P.; Park, S.; Dutton, G.; Steele, L. P.; Lunder, C. R.; Rhee, T. S.; Hermansen, O.; Schmidbauer, N.; Wang, R. H. J.; Hill, M.; Salameh, P. K.; Langenfelds, R. L.; Zhou, L. X.; Blunier, T.; Schwander, J.; Elkins, J. W.; Butler, J. H.; Simmonds, P. G.; Weiss, R. F.; Prinn, R. G.; Fraser, P. J.;
      Published Date:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(7), 3663-3686.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      We report ground-based atmospheric measurements and emission estimates for the halons H-1211 (CBrClF2), H-1301 (CBrF3), and H-2402 (CBrF2CBrF2) from the AGAGE (Advanced Global Atmospheric Gases Experiment) and the National Oceanic and Atmospheric Adm...
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    14. The influence of daily meteorology on boreal fire emissions and regional trace gas variability
      Personal Author:
      Wiggins, E. B.; Veraverbeke, S.; Henderson, J. M.; Karion, A.; Miller, J. B.; Lindaas, J.; Commane, R.; Sweeney, C.; Luus, K. A.; Tosca, M. G.; Dinardo, S. J.; Wofsy, S.; Miller, C. E.; Randerson, J. T.;
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      2016
      Source:
      Journal of Geophysical Research-Biogeosciences, 121(11), 2793-2810.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Relationships between boreal wildfire emissions and day-to-day variations in meteorological variables are complex and have important implications for the sensitivity of high-latitude ecosystems to climate change. We examined the influence of environm...
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    15. Continuous and high-precision atmospheric concentration measurements of COS, CO2, CO and H2O using a quantum cascade laser spectrometer (QCLS)
      Personal Author:
      Kooijmans, L. M. J.; Uitslag, N. A. M.; Zahniser, M. S.; Nelson, D. D.; Montzka, S. A.; Chen, H. L.;
      Published Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(11), 5293-5314.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Carbonyl sulfide (COS) has been suggested as a useful tracer for gross primary production as it is taken up by plants in a similar way as CO2. To explore and verify the application of this novel tracer, it is highly desired to develop the ability to ...
      File Type:
      Filetype[PDF - 5.11 MB]
    16. Inverse modeling of GOSAT-retrieved ratios of total column CH4 and CO2 for 2009 and 2010
      Personal Author:
      Pandey, S.; Houweling, S.; Krol, M.; Aben, I.; Chevallier, F.; Dlugokencky, E. J.; Gatti, L. V.; Gloor, E.; Miller, J. B.; Detmers, R.; Machida, T.; Rockmann, T.;
      Published Date:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(8), 5043-5062.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      This study investigates the constraint provided by greenhouse gas measurements from space on surface fluxes. Imperfect knowledge of the light path through the atmosphere, arising from scattering by clouds and aerosols, can create biases in column mea...
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      Filetype[PDF - 3.49 MB]
    17. Summertime surface O-3 behavior and deposition to tundra in the Alaskan Arctic
      Personal Author:
      Van Dam, B.; Helmig, D.; Doskey, P. V.; Oltmans, S. J.;
      Published Date:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(13), 8055-8066.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Atmospheric turbulence quantities, boundary layer ozone (O-3) levels, and O-3 deposition to the tundra surface were investigated at Toolik Lake, AK, during the 2011 summer season. Beginning immediately after snowmelt, a diurnal cycle of O-3 in the at...
      File Type:
      Filetype[PDF - 2.83 MB]
    18. A multiyear estimate of methane fluxes in Alaska from CARVE atmospheric observations
      Personal Author:
      Miller, S. M.; Miller, C. E.; Commane, R.; Chang, R. Y. W.; Dinardo, S. J.; Henderson, J. M.; Karion, A.; Lindaas, J.; Melton, J. R.; Miller, J. B.; Sweeney, C.; Wofsy, S. C.; Michalak, A. M.;
      Published Date:
      2016
      Source:
      Global Biogeochemical Cycles, 30(10), 1441-1453.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Methane (CH4) fluxes from Alaska and other arctic regions may be sensitive to thawing permafrost and future climate change, but estimates of both current and future fluxes from the region are uncertain. This study estimates CH4 fluxes across Alaska f...
      File Type:
      Filetype[PDF - 2.74 MB]
    19. Regional Methane Emission Estimation Based on Observed Atmospheric Concentrations (2002-2012)
      Personal Author:
      Patra, P. K.; Saeki, T.; Dlugokencky, E. J.; Ishijima, K.; Umezawa, T.; Ito, A.; Aoki, S.; Morimoto, S.; Kort, E. A.; Crotwell, A.;
      Published Date:
      2016
      Source:
      Journal of the Meteorological Society of Japan, 94(1), 91-113.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Methane (CH4) plays important roles in atmospheric chemistry and short-term forcing of climate. A clear understanding of atmospheric CH4's budget of emissions and losses is required to aid sustainable management of Earth's future environment. We used...
      File Type:
      Filetype[PDF - 16.15 MB]
    20. Detecting regional patterns of changing CO2 flux in Alaska
      Personal Author:
      Parazoo, N. C.; Commane, R.; Wofsy, S. C.; Koven, C. D.; Sweeney, C.; Lawrence, D. M.; Lindaas, J.; Chang, R. Y. W.; Miller, C. E.;
      Published Date:
      2016
      Source:
      Proceedings of the National Academy of Sciences of the United States of America, 113(28), 7733-7738.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      With rapid changes in climate and the seasonal amplitude of carbon dioxide (CO2) in the Arctic, it is critical that we detect and quantify the underlying processes controlling the changing amplitude of CO2 to better predict carbon cycle feedbacks in ...
      File Type:
      Filetype[PDF - 1.21 MB]
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